嵌套表格参数不会保存到ShopProductPrintFile数据库模型中。
以下参数通过：
NotImplemented表格：
..., "print_locations"=>{"1"=>{"shop_product_print_files_attributes"=>{"print_file"=>"a", "print_location_id"=>"1"}}, "2"=>{"shop_product_print_files_attributes"=>{"print_file"=>"", "print_location_id"=>"2"}}, "3"=>{"shop_product_print_files_attributes"=>{"print_file"=>"a", "print_location_id"=>"3"}}, "4"=>{"shop_product_print_files_attributes"=>{"print_file"=>"", "print_location_id"=>"4"}}, "5"=>{"shop_product_print_files_attributes"=>{"print_file"=>"", "print_location_id"=>"5"}}, "6"=>{"shop_product_print_files_attributes"=>{"print_file"=>"", "print_location_id"=>"6"}}},...
型号：
...
<% PrintLocation.all.each do |pl| %>
<%= f.fields_for 'print_locations[]', pl do |ff| %>
<%= ff.fields_for :shop_product_print_files_attributes do |fff| %>
<%= fff.text_field :print_file %>
<%= fff.hidden_field :print_location_id, value: pl.id %>
<% end %>
<% end %>
<% end %>
...
参数：
class ShopProduct < ApplicationRecord
has_many :shop_product_print_files
has_many :print_locations, through: :shop_product_print_files
accepts_nested_attributes_for :shop_product_print_files
end
class ShopProductPrintFile < ApplicationRecord
belongs_to :shop_product
belongs_to :print_location
accepts_nested_attributes_for :print_location
end
class PrintLocation < ApplicationRecord
has_many :shop_product_print_files
has_many :shop_products, through: :shop_product_print_files
accepts_nested_attributes_for :shop_product_print_files
end
我的印象是，只要正确完成了strong_params，这些应该保存下来，我相信它们是吗？还是...？
在创建ShopProduct时，在PrintLocation（标识，名称）模型中设置了6个指定的PrintLocation，可以为每个PrintLocation保存def shop_product_params
params.require(:shop_product).permit(:product_id, :store_product_id, :shop_id, :store_variant_id, :sync, :print_file_location, shop_product_print_files_attributes: [ :id, :print_file, :print_location_id, :shop_product_id ] )
end
。然后ShopProductPrintFile模型将容纳print_file，shop_product_id和print_location_id。
上面显示的参数后的整个控制台：
print_file